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1

Anti-inflammatory and antinociceptive effects of Baccharis dracunculifolia DC (Asteraceae) in different experimental models

Diogo A. dos Santos, Murilo de J. Fukui, N.P. Dhammika Nanayakkara, Shabana I. Khan, João Paulo B. Sousa, Jairo K. Bastos, Sérgio F. Andrade, Ademar A. da Silva Filho, Nara L.M. Quintão

Journal:

Journal of Ethnopharmacology

Year:

2010

Language:

english

File:

PDF, 411 KB

english, 2010

2

Analysis of primaquine and its metabolite carboxyprimaquine in biological samples: enantiomeric separation, method validation and quantification

Bharathi Avula, Shabana I. Khan, Babu L. Tekwani, N.P. Dhammika Nanayakkara, James D. McChesney, Larry A. Walker, Ikhlas A. Khan

Journal:

Biomedical Chromatography

Year:

2011

Language:

english

File:

PDF, 750 KB

english, 2011

3

Potential sweetening agents of plant origin. Part 27. Stimulation of the gerbil's gustatory receptors by some potently sweet terpenoids

Vasquez, Enrique., Jakinovich, William., Nanayakkara, N. P. Dhammika., Hussain, Raouf A., Chung, Myung Sook., Kinghorn, A. Douglas.

Journal:

Journal of Agricultural and Food Chemistry

Year:

1993

Language:

english

File:

PDF, 791 KB

english, 1993

4

A Utilization of the Selective Inept Experiment for the Structure Elucidation of Oxygenated Chromenes

Jayasuriya, Hiranthi, Dhammika Nanayakkara, N. P., Mcchesney, James D.

Journal:

Natural Product Letters

Year:

1994

Language:

english

File:

PDF, 349 KB

english, 1994

5

Flavonoids with Activity against Methicillin-Resistant Staphylococcus aureus from Dalea scandens var. paucifolia

Nanayakkara, N. P. Dhammika, Burandt Jr., Charles L., Jacob, Melissa R.

Journal:

Year:

2002

Language:

english

File:

PDF, 88 KB

english, 2002

6

A Survey of Synthetic and Natural Phytotoxic Compounds and Phytoalexins as Potential Antimalarial Compounds

Bajsa, Joanna, Singh, Kshipra, Nanayakkara, Dhammika, Duke, Stephen Oscar, Rimando, Agnes Mamaril, Evidente, Antonio, Tekwani, Babu Lal

Journal:

Biological & Pharmaceutical Bulletin

Year:

2007

Language:

english

File:

PDF, 88 KB

english, 2007

7

Synthesis of enantiomerically pure fire ant venom alkaloids: Solenopsins and isosolenopsins A, B and C

H. M. T. Bandara Herath, N. P. Dhammika Nanayakkara

Journal:

Journal of Heterocyclic Chemistry

Year:

2008

Language:

english

File:

PDF, 506 KB

english, 2008

8

13C nuclear magnetic resonance spectra of some naturally occurring friedelanones

A. A. Leslie Gunatilaka, N. P. Dhammika Nanayakkara, M. Uvais S. Sultanbawa, Mohammed I. M. Wazeer

Journal:

Magnetic Resonance in Chemistry

Year:

1980

Language:

english

File:

PDF, 288 KB

english, 1980

9

Assignment of the 13C nuclear magnetic resonance spectra of three 27-hydroxyfriedelanes

A. A. Leslie Gunatilaka, N. P. Dhammika Nanayakkara, M. Uvais S. Sultanbawa, Mohamed I. M. Wazeer

Journal:

Magnetic Resonance in Chemistry

Year:

1982

Language:

english

File:

PDF, 132 KB

english, 1982

10

Friedelin, D:A-friedo-olean-3,21-dione and 21α-hydroxy-D:A-friedo-olean-3-one from Kokoona zeylanica

A.A. Leslie Gunatilaka, N.P. Dhammika Nanayakkara, M. Uvais, S. Sultanbawa, Sinnathamby Balasubramaniam

Journal:

Year:

1982

Language:

english

File:

PDF, 291 KB

english, 1982

11

Two triterpenes from Davidsonia pruriens

Duanodeun Meksuriyen, N.P. Dhammika Nanayakkara, Charles H. Phoebe Jr., Geoffrey A. Cordell

Journal:

Year:

1986

Language:

english

File:

PDF, 541 KB

english, 1986

12

Kavalactones from Piper methysticum, and their 13C NMR spectroscopic analyses

H Ranjith W. Dharmaratne, N.P Dhammika Nanayakkara, Ikhlas A Khan

Journal:

Year:

2002

Language:

english

File:

PDF, 120 KB

english, 2002

13

The inhibitory activity of natural products on plant p-hydroxyphenylpyruvate dioxygenase

Giovanni Meazza, Brian E Scheffler, Mario R Tellez, Agnes M Rimando, Joanne G Romagni, Stephen O Duke, Dhammika Nanayakkara, Ikhlas A Khan, Ehab A Abourashed, Franck E Dayan

Journal:

Year:

2002

Language:

english

File:

PDF, 173 KB

english, 2002

14

Studies on terpenoids and steroids—2 : Structures of two new tri- and tetra-oxygenated D:A-friedo-oleanan triterpenes from kokoona zeylanica

A.A. Leslie Gunatilaka, N.P. Dhammika Nanayakkara

Journal:

Year:

1984

Language:

english

File:

PDF, 646 KB

english, 1984

15

Structures of kokzeylanol and kokzeylanonol two new natural tri- and tetra- oxygenated D:A-friedo-oleananes

A.A.Leslie Gunatilaka, N.P.Dhammika Nanayakkara, M. Uvais, S. Sultanbawa

Journal:

Tetrahedron Letters

Year:

1981

Language:

english

File:

PDF, 200 KB

english, 1981

16

Structures of three new 6β-hydroxy di- and tri-oxygenated friedelane triterpenes from kokoona zeylanica thw. (celastraceae)

A.A.Leslie Gunatilaka, N.P.Dhammika Nanayakkara, M.Uvais S. Sultanbawa

Journal:

Tetrahedron Letters

Year:

1979

Language:

english

File:

PDF, 229 KB

english, 1979

17

Quantitative determination of podophyllotoxin and related compounds in podophyllum species by reverse phase high performance liquid chromatography

Jairo K. Bastos, Wlodzimierz J. Kopycki, Charles L. Burandt Jr., N. P. Dhammika Nanayakkara, James D. McChesney

Journal:

Phytochemical Analysis

Year:

1995

Language:

english

File:

PDF, 452 KB

english, 1995

18

Anxiolytic properties of Piper methysticum extract samples and fractions in the chick social–separation–stress procedure

Matt W. Feltenstein, L. Corinne Lambdin, M. Ganzera, H. Ranjith, W. Dharmaratne, N. P. Dhammika Nanayakkara, Ikhlas A. Khan, Kenneth J. Sufka

Journal:

Phytotherapy Research

Year:

2003

Language:

english

File:

PDF, 189 KB

english, 2003

19

In vitro antileishmanial and antimalarial activities of tetrahydrofuran lignans isolated from Nectandra megapotamica (Lauraceae)

Ademar A. da Silva Filho, Eveline S. Costa, Wilson R. Cunha, Márcio L. A. e Silva, N. P. Dhammika Nanayakkara, Jairo K. Bastos

Journal:

Phytotherapy Research

Year:

2008

Language:

english

File:

PDF, 125 KB

english, 2008

20

Anxiolytic effects of kava extract and kavalactones in the chick social separation-stress paradigm

Kenyatta K. Smith, H. Ranjith W. Dharmaratne, Matt W. Feltenstein, Susan L. Broom, J. Todd Roach, N.P. Dhammika Nanayakkara, Ikhlas A. Khan, Kenneth J. Sufka

Journal:

Psychopharmacology

Year:

2001

Language:

english

File:

PDF, 96 KB

english, 2001

21

In vitro and in vivo antileishmanial activities of a Brazilian green propolis extract

Karina Pontin, Ademar A. Da Silva Filho, Fransérgio Francisco Santos, Márcio Luís Andrade e Silva, Wilson Roberto Cunha, N. P. Dhammika Nanayakkara, Jairo Kenupp Bastos, Sérgio de Albuquerque

Journal:

Parasitology Research

Year:

2008

Language:

english

File:

PDF, 172 KB

english, 2008

22

13C NMR Spectra of some D:A-friedo-oleananes

A.A. Leslie Gunatilaka, N. Dhammika Nanayakkara, Mohammed I.M. Wazeer

Journal:

Year:

1983

Language:

english

File:

PDF, 191 KB

english, 1983

23

Evaluation of free radical-generating compounds for toxicity towards the cyanobacterium Planktothrix perornata, which causes musty off-flavour in pond-raised channel catfish (Ictalurus punctatus)

N P Dhammika Nanayakkara, Kevin K Schrader

Journal:

Aquaculture Research

Year:

2011

Language:

english

File:

PDF, 102 KB

english, 2011

24

Modified 8-Aminoquinolines Cure Mouse Pneumocutis carinii Infection

MARGARET M. SHAW, JAMES D. McCHESNEY, DHAMMIKA NANAYAKKARA, LUIZA R. S. DIAS, CHAO-HUNG LEE, PAMELA J. DURANT, MARK D. BALL, JAMES W. SMITH, MARILYN S. BARTLETT

Journal:

Journal of Eukaryotic Microbiology

Year:

1997

Language:

english

File:

PDF, 141 KB

english, 1997

25

Inhibition of human monoamine oxidase A and B by 5-phenoxy 8-aminoquinoline analogs

Narayan D. Chaurasiya, Shobana Ganesan, N.P. Dhammika Nanayakkara, Luiza R.S. Dias, Larry A. Walker, Babu L. Tekwani

Journal:

Bioorganic & Medicinal Chemistry Letters

Year:

2012

Language:

english

File:

PDF, 797 KB

english, 2012

26

Enantiomeric resolution of (±)-licarin A by high-performance liquid-chromatography using a chiral stationary phase

Ana Carolina Pereira, Lizandra G. Magalhães, Ana Helena Januário, Patrícia M. Pauletti, Wilson Roberto Cunha, Jairo Kenupp Bastos, Dhammika N.P. Nanayakkara, Márcio Luis A. e Silva

Journal:

Journal of Chromatography A

Year:

2011

Language:

english

File:

PDF, 576 KB

english, 2011

27

Generation of reactive oxygen species by a novel anthraquinone derivative in the cyanobacterium Planktothrix perornata (Skuja)

Kevin K. Schrader, Franck E. Dayan, N.P. Dhammika Nanayakkara

Journal:

Pesticide Biochemistry and Physiology

Year:

2005

Language:

english

File:

PDF, 291 KB

english, 2005

28

N-(2-hydroxypropyl)methacrylamide (HPMA) copolymers for targeted delivery of 8-aminoquinoline antileishmanial drugs

Anjan Nan, N.P.Dhammika Nanayakkara, Larry A Walker, Vanessa Yardley, Simon L Croft, Hamidreza Ghandehari

Journal:

Journal of Controlled Release

Year:

2001

Language:

english

File:

PDF, 161 KB

english, 2001

29

Antiprotozoal and Antimicrobial Compounds from the Plant Pathogen Septoria pistaciarum

Kumarihamy, Mallika, Khan, Shabana I., Jacob, Melissa, Tekwani, Babu L., Duke, Stephen O., Ferreira, Daneel, Nanayakkara, N. P. Dhammika

Journal:

Journal of Natural Products

Year:

2012

Language:

english

File:

PDF, 488 KB

english, 2012

30

Anti-inflammatory and analgesic properties of water–ethanolic extract from Pothomorphe umbellata (Piperaceae) aerial parts

Fabio F. Perazzo, Gustavo H.B. Souza, Walter Lopes, Luis G.V. Cardoso, Jose C.T. Carvalho, N.P. Dhammika Nanayakkara, Jairo K. Bastos

Journal:

Journal of Ethnopharmacology

Year:

2005

Language:

english

File:

PDF, 154 KB

english, 2005

31

The phytotoxic lichen metabolite, usnic acid, is a potent inhibitor of plant p-hydroxyphenylpyruvate dioxygenase

Joanne G. Romagni, Giovanni Meazza, N.P.Dhammika Nanayakkara, Franck E. Dayan

Journal:

Year:

2000

Language:

english

File:

PDF, 220 KB

english, 2000

32

Methemoglobinemia Caused by 8-Aminoquinoline Drugs: DFT Calculations Suggest an Analogy to H 4 B’s Role in Nitric Oxide Synthase

Liu, Haining, Walker, Larry A., Nanayakkara, N. P. Dhammika, Doerksen, Robert J.

Journal:

Journal of the American Chemical Society

Year:

2011

Language:

english

File:

PDF, 1.16 MB

english, 2011

33

Characterization of bacterial mutagenicity mediated by 13-hydroxy-ent-kaurenoic acid (steviol) and several structurally-related derivatives and evaluation of potential to induce glutathione S-transferase in mice

John M. Pezzuto, N.P. Dhammika Nanayakkara, Cesar M. Compadre, Steven M. Swanson, A.Douglas Kinghorn, Thomas M. Guenthner, Velta L. Sparnins, Luke K.T. Lam

Journal:

Mutation Research/Genetic Toxicology

Year:

1986

Language:

english

File:

PDF, 725 KB

english, 1986

34

Cassia Cinnamon as a Source of Coumarin in Cinnamon-Flavored Food and Food Supplements in the United States

Wang, Yan-Hong, Avula, Bharathi, Nanayakkara, N. P. Dhammika, Zhao, Jianping, Khan, Ikhlas A.

Journal:

Journal of Agricultural and Food Chemistry

Year:

2013

Language:

english

File:

PDF, 248 KB

english, 2013

35

N -Methyl-4-hydroxy-2-pyridinone Analogues from Fusarium oxysporum ⊥

Jayasinghe, Lalith, Abbas, Hamed K., Jacob, Melissa R., Herath, Wimal H. M. W., Nanayakkara, N. P. Dhammika

Journal:

Journal of Natural Products

Year:

2006

Language:

english

File:

PDF, 53 KB

english, 2006

36

Potential sweetening agents of plant origin. 13. An intensely sweet dihydroflavonol derivative based on a natural product lead compound

Nanayakkara, N. P. Dhammika, Hussain, Raouf A., Pezzuto, John M., Soejarto, D. Doel, Kinghorn, A. Douglas

Journal:

Journal of Medicinal Chemistry

Year:

1988

Language:

english

File:

PDF, 592 KB

english, 1988

37

In plantaMechanism of Action of Leptospermone: Impact of Its Physico-Chemical Properties on Uptake, Translocation, and Metabolism

Daniel K. Owens, N. P. Dhammika Nanayakkara, Franck E. Dayan

Journal:

Journal of Chemical Ecology

Year:

2013

Language:

english

File:

PDF, 481 KB

english, 2013

38

Synthesis of [ 13 C 6 ]primaquine

Herath, H. M. T. Bandara, McChesney, James D., Walker, Larry A., Nanayakkara, N. P. Dhammika

Journal:

Journal of Labelled Compounds and Radiopharmaceuticals

Year:

2013

Language:

english

File:

PDF, 187 KB

english, 2013

39

Profiling primaquine metabolites in primary human hepatocytes using UHPLC-QTOF-MS with 13 C stable isotope labeling

Avula, Bharathi, Tekwani, Babu L., Chaurasiya, Narayan D., Nanayakkara, NP Dhammika, Wang, Yan-Hong, Khan, Shabana I., Adelli, Vijender R., Sahu, Rajnish, Elsohly, Mahmoud A., McChesney, James D., Kha

Journal:

Biological Mass Spectrometry = Journal of Mass Spectrometry (Wiley)

Year:

2013

Language:

english

File:

PDF, 405 KB

english, 2013

40

New secondary metabolites from bioactive extracts of the fungus Armillaria tabescens

Herath, H.M.T. Bandara, Jacob, Melissa, Wilson, A. Dan, Abbas, Hamed K., Nanayakkara, N.P. Dhammika

Journal:

Natural Product Research

Year:

2013

Language:

english

File:

PDF, 298 KB

english, 2013

41

Synthesis of Water-Soluble 9,10-Anthraquinone Analogues with Potent Cyanobactericidal Activity toward the Musty-Odor Cyanobacterium Oscillatoria perornata

Nanayakkara, N. P. Dhammika, Schrader, Kevin K.

Journal:

Journal of Agricultural and Food Chemistry

Year:

2008

Language:

english

File:

PDF, 138 KB

english, 2008

42

In vitro anti-allergic activity of the fungal metabolite pyridovericin

de Souza Santos, Marcela, Jonis Andrioli, Willian, Freire de Morais Del Lama, Maria Perpétua, Kenupp Bastos, Jairo, Nanayakkara, N.P. Dhammika, Zumstein Georgetto Naal, Rose Mary

Journal:

International Immunopharmacology

Year:

2013

Language:

english

File:

PDF, 588 KB

english, 2013

43

Metabolically Activated Steviol, the Aglycone of Stevioside, is Mutagenic

John M. Pezzuto, César M. Compadre, Steven M. Swanson, N. P. Dhammika Nanayakkara and A. Douglas Kinghorn

Journal:

Proceedings of the National Academy of Sciences

Year:

1985

Language:

english

File:

PDF, 1.29 MB

english, 1985

44

Bioactive 1,4-Dihydroxy-5-phenyl-2-pyridinone Alkaloids from Septoria pistaciarum

Kumarihamy, Mallika, Fronczek, Frank R., Ferreira, Daneel, Jacob, Melissa, Khan, Shabana I., Nanayakkara, N. P. Dhammika

Journal:

Journal of Natural Products

Year:

2010

Language:

english

File:

PDF, 291 KB

english, 2010

45

Methemoglobin Generation by 8-Aminoquinolines: Effect of Substitution at 5-Position of Primaquine

Liu, Haining, Tekwani, Babu L., Nanayakkara, N. P. Dhammika, Walker, Larry A., Doerksen, Robert J.

Journal:

Chemical Research in Toxicology

Year:

2013

Language:

english

File:

PDF, 1.69 MB

english, 2013

46

Quantitation of Aryltetralin Lignans in Plant Parts and among Different Populations of Podophyllum peltatum by Reversed-Phase High-Performance Liquid Chromatography

Bastos, Jairo K., Burandt,, Charles L., Nanayakkara, N. P. Dhammika, Bryant, Laura, McChesney, James D.

Journal:

Journal of Natural Products

Year:

1996

Language:

english

File:

PDF, 134 KB

english, 1996

47

A Rapid Quantitative Method for the Analysis of Galanthamine and Other Amaryllidaceae Alkaloids by Capillary Column Gas Chromatography †

Bastos, Jairo K., Xu, Li, Dhammika Nanayakkara, N. P., Burandt,, Charles L., Moraes-Cerdeira, Rita M., McChesney, James D.

Journal:

Journal of Natural Products

Year:

1996

Language:

english

File:

PDF, 164 KB

english, 1996

48

Furofuran lignans display schistosomicidal and trypanocidal activities

e Silva, Márcio Luis Andrade, Esperandim, Viviane Rodrigues, Ferreira, Daniele da Silva, Magalhães, Lizandra Guidi, Lima, Thais Coelho, Cunha, Wilson Roberto, Nanayakkara, Dhammika N.P., Pereira, Ana

Journal:

Year:

2014

Language:

english

File:

PDF, 776 KB

english, 2014

49

Evaluation of antimicrobial and antimalarial activities of crude extract, fractions and 4-nerolidylcathecol from the aerial parts of Piper umbellata L. (Piperaceae)

Bagatela, Bianca Souza, Lopes, Andrey Pereira, Fonseca, Fernando Luiz Affonso, Andreo, Márcio Adriano, Nanayakkara, Dhammika N.P., Bastos, Jairo Kenupp, Perazzo, Fábio Ferreira

Journal:

Natural Product Research

Year:

2013

Language:

english

File:

PDF, 162 KB

english, 2013

50

Hydroxylated Derivatives of NPC1161: Theoretical Insights into Their Potential Toxicity and the Feasibility and Regioselectivity of Their Formation

Ding, Yuanqing, Liu, Haining, Nanayakkara, N. P. Dhammika, Khan, Ikhlas A., Tekwani, Babu L., Walker, Larry A., Doerksen, Robert J.

Journal:

Journal of Physical Chemistry A

Year:

2014

Language:

english

File:

PDF, 2.34 MB

english, 2014